EMS-ESP Unloads shortly after changing to Heat mode

[ScottWoolven5]

I am using EMS-ESP connected to my Worcester Greenstar 2000 boiler. The automated calibration never finishes to I've just set a manual overshoot protection value. However shortly after changing the mode to Heat, the thermostat resets back to Off.

Below is the log:

2025-10-08 17:49:43.184 DEBUG (MainThread) [custom_components.sat.config_flow] Discovered MQTT at [mqtt://ems-esp/boiler_data]

2025-10-08 17:49:43.185 DEBUG (MainThread) [custom_components.sat.config_flow] Identified gateway type ems: ems-esp

2025-10-08 17:49:43.834 INFO (MainThread) [custom_components.sat.coordinator] Set central heater state DeviceState.ON

2025-10-08 17:49:44.370 DEBUG (MainThread) [custom_components.sat.config_flow] Discovered MQTT at [mqtt://ems-esp/boiler_data]

2025-10-08 17:49:44.370 DEBUG (MainThread) [custom_components.sat.config_flow] Identified gateway type ems: ems-esp

2025-10-08 17:49:45.064 DEBUG (MainThread) [custom_components.sat.config_flow] Discovered MQTT at [mqtt://ems-esp/boiler_data]

2025-10-08 17:49:45.064 DEBUG (MainThread) [custom_components.sat.config_flow] Identified gateway type ems: ems-esp

2025-10-08 17:49:45.155 DEBUG (MainThread) [custom_components.sat.config_flow] Discovered MQTT at [mqtt://ems-esp/heating_active]

2025-10-08 17:49:45.155 DEBUG (MainThread) [custom_components.sat.config_flow] Identified gateway type ems: ems-esp

2025-10-08 17:49:45.203 DEBUG (MainThread) [custom_components.sat.relative_modulation] Relative Modulation initialized for heating system: radiators

2025-10-08 17:49:45.204 DEBUG (MainThread) [custom_components.sat.pwm] Initialized PWM control with duty cycle thresholds - Lower: 20.00%, Upper: 80.00%

2025-10-08 17:49:45.204 INFO (MainThread) [custom_components.sat.pwm] PWM control reset to initial state.

2025-10-08 17:49:45.206 INFO (MainThread) [custom_components.sat.climate] Overshoot Handling detected, enabling Pulse Width Modulation.

2025-10-08 17:49:45.207 INFO (MainThread) [custom_components.sat.pwm] PWM control reset to initial state.

2025-10-08 17:49:45.207 INFO (MainThread) [custom_components.sat.climate] Pulse Width Modulation is disabled or in IDLE state. Running normal heating cycle.

2025-10-08 17:49:45.207 DEBUG (MainThread) [custom_components.sat.climate] Calculated setpoint for normal cycle: 55.0°C

2025-10-08 17:49:45.207 DEBUG (MainThread) [custom_components.sat.mqtt] Publishing MQTT command: payload='{"cmd": "selflowtemp", "value": 55.0}', topic='ems-esp/boiler', simulation='False'

2025-10-08 17:49:45.251 ERROR (MainThread) [homeassistant.config_entries] Error unloading entry Thermostat for climate
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 975, in async_unload
    result = await component.async_unload_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/climate/__init__.py", line 205, in async_unload_entry
    return await hass.data[DATA_COMPONENT].async_unload_entry(entry)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 228, in async_unload_entry
    raise ValueError("Config entry was never loaded!")
ValueError: Config entry was never loaded!
2025-10-08 17:49:45.258 ERROR (MainThread) [homeassistant.config_entries] Error unloading entry Thermostat for sensor
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 975, in async_unload
    result = await component.async_unload_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/sensor/__init__.py", line 105, in async_unload_entry
    return await hass.data[DATA_COMPONENT].async_unload_entry(entry)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 228, in async_unload_entry
    raise ValueError("Config entry was never loaded!")
ValueError: Config entry was never loaded!
2025-10-08 17:49:45.264 ERROR (MainThread) [homeassistant.config_entries] Error unloading entry Thermostat for number
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 975, in async_unload
    result = await component.async_unload_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/number/__init__.py", line 135, in async_unload_entry
    return await hass.data[DATA_COMPONENT].async_unload_entry(entry)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 228, in async_unload_entry
    raise ValueError("Config entry was never loaded!")
ValueError: Config entry was never loaded!

The last error message repeats over and over.

[ScottWoolven5]

I also see the following errors in the system log after a restart:

Logger: homeassistant.helpers.frame
Source: helpers/frame.py:350
First occurred: 22:13:22 (1 occurrence)
Last logged: 22:13:22

Detected that custom integration 'sat' calls async_forward_entry_setups for integration sat with title: Thermostat and entry_id: 01K72AZ0PQFB0SCTXDCAJ48VZB, during setup without awaiting async_forward_entry_setups, which can cause the setup lock to be released before the setup is done at custom_components/sat/__init__.py, line 58: await ```
hass.config_entries.async_forward_entry_setups(entry, PLATFORMS). This will stop working in Home Assistant 2025.1, please create a bug report at https://github.com/Alexwijn/SAT/issues

Logger: homeassistant.config_entries
Source: config_entries.py:975
First occurred: 22:13:16 (648 occurrences)
Last logged: 22:13:35

Error unloading entry Thermostat for climate
Error unloading entry Thermostat for sensor
Error unloading entry Thermostat for number
Error unloading entry Thermostat for binary_sensor
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 975, in async_unload
    result = await component.async_unload_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/climate/__init__.py", line 205, in async_unload_entry
    return await hass.data[DATA_COMPONENT].async_unload_entry(entry)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 228, in async_unload_entry
    raise ValueError("Config entry was never loaded!")
ValueError: Config entry was never loaded!

Logger: homeassistant.components.climate
Source: helpers/entity_platform.py:843
integration: Climate (documentation, issues)
First occurred: 22:13:19 (59 occurrences)
Last logged: 22:13:36

Platform sat does not generate unique IDs. ID thermostat already exists - ignoring climate.thermostat

Logger: homeassistant.components.sensor
Source: helpers/entity_platform.py:676
integration: Sensor (documentation, issues)
First occurred: 22:13:19 (118 occurrences)
Last logged: 22:13:36

Error adding entity sensor.error_value_thermostat for domain sensor with platform sat
Error adding entity sensor.heating_curve_thermostat for domain sensor with platform sat
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 676, in _async_add_entities
    await self._async_add_entity(
        entity, False, entity_registry, config_subentry_id
    )
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 1002, in _async_add_entity
    await entity.add_to_platform_finish()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1380, in add_to_platform_finish
    await self.async_added_to_hass()
  File "/config/custom_components/sat/sensor.py", line 196, in async_added_to_hass
    async_track_state_change_event(
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        self.hass, [self._climate.entity_id], on_state_change
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/helpers/event.py", line 334, in async_track_state_change_event
    if not (entity_ids := _async_string_to_lower_list(entity_ids)):
                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/event.py", line 728, in _async_string_to_lower_list
    return [mstr.lower() for mstr in instr]
            ^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'lower'

Logger: homeassistant.components.binary_sensor
Source: helpers/entity_platform.py:676
integration: Binary sensor (documentation, issues)
First occurred: 22:13:19 (59 occurrences)
Last logged: 22:13:36

Error adding entity binary_sensor.central_heating_synchro for domain binary_sensor with platform sat
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 676, in _async_add_entities
    await self._async_add_entity(
        entity, False, entity_registry, config_subentry_id
    )
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 1002, in _async_add_entity
    await entity.add_to_platform_finish()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1382, in add_to_platform_finish
    self.async_write_ha_state()
    ~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1026, in async_write_ha_state
    self._async_write_ha_state()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1151, in _async_write_ha_state
    self.__async_calculate_state()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1088, in __async_calculate_state
    state = self._stringify_state(available)
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 1032, in _stringify_state
    if (state := self.state) is None:
                 ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/binary_sensor/__init__.py", line 200, in state
    if (is_on := self.is_on) is None:
                 ^^^^^^^^^^
  File "/config/custom_components/sat/binary_sensor.py", line 155, in is_on
    climate_hvac_action = self._climate.state_attributes.get("hvac_action")
                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/climate/__init__.py", line 346, in state_attributes
    precision = self.precision
                ^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/climate/__init__.py", line 301, in precision
    if self.hass.config.units.temperature_unit == UnitOfTemperature.CELSIUS:
       ^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'config'

Logger: homeassistant.config_entries
Source: config_entries.py:761
First occurred: 22:13:16 (648 occurrences)
Last logged: 22:13:38

Error setting up entry Thermostat for climate
Error setting up entry Thermostat for sensor
Error setting up entry Thermostat for number
Error setting up entry Thermostat for binary_sensor
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 761, in __async_setup_with_context
    result = await component.async_setup_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/climate/__init__.py", line 200, in async_setup_entry
    return await hass.data[DATA_COMPONENT].async_setup_entry(entry)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/entity_component.py", line 210, in async_setup_entry
    raise ValueError(
    ...<2 lines>...
    )
ValueError: Config entry Thermostat (01K72AZ0PQFB0SCTXDCAJ48VZB) for sat.climate has already been setup!

This error originated from a custom integration.

Logger: homeassistant
Source: custom_components/sat/__init__.py:73
integration: Smart Autotune Thermostat (documentation, issues)
First occurred: 22:13:15 (398 occurrences)
Last logged: 22:14:05

Error doing job: Task exception was never retrieved (None)
Traceback (most recent call last):
  File "/config/custom_components/sat/__init__.py", line 105, in async_reload_entry
    await async_unload_entry(hass, entry)
  File "/config/custom_components/sat/__init__.py", line 73, in async_unload_entry
    _climate = hass.data[DOMAIN][entry.entry_id][CLIMATE]
               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
KeyError: 'climate'